49.21% is the change from 445 to 664
Calculation steps:
[( 664 - 445 ) ÷ 445] x 100 = 49.21%
Formula
Percentage change = [(664 - 445) / 445] x 100
Subtract the new number by the original number
664 - 445 = 219
219 ÷ 445 = 0.49213483146067416
0.49213483146067416 x 100 = 49.21%